iMiEV tyre wear status
- acmotor
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iMiEV tyre wear status
bga and I did a quick check the other day of iMiEV tyre wear.
That inspired me to record some measurements for other i owners to compare.
At 28,097km in my i the tyre treads measure :-
depths in mm
groove left 2 3 right
RR 4.8 5.8 5.7 4.7
LR 4.9 5.8 5.7 4.4
RF 3.6 4.3 4.3 4.2
LF 3.5 4.6 4.7 3.8
Tread wear indicators are at 1.6mm
I run these tyres at 39psi with plenty of 100km/h 1 person work.
The tyre wear suggests tyres are not over inflated.
The side wear probably reflects my enjoyment of cornering with the i's low COG.
If other i owners can make measurements then we can get a picture of tyre wear and life expectancy.
It would be good to get a 'new' depth measurement by the same method.
That inspired me to record some measurements for other i owners to compare.
At 28,097km in my i the tyre treads measure :-
depths in mm
groove left 2 3 right
RR 4.8 5.8 5.7 4.7
LR 4.9 5.8 5.7 4.4
RF 3.6 4.3 4.3 4.2
LF 3.5 4.6 4.7 3.8
Tread wear indicators are at 1.6mm
I run these tyres at 39psi with plenty of 100km/h 1 person work.
The tyre wear suggests tyres are not over inflated.
The side wear probably reflects my enjoyment of cornering with the i's low COG.
If other i owners can make measurements then we can get a picture of tyre wear and life expectancy.
It would be good to get a 'new' depth measurement by the same method.
converted RedSuzi, the first industrial AC induction motor conversion
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
- Adverse Effects
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iMiEV tyre wear status
i would be taking them up to 44 but you will lose a bit of comfort
- acmotor
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iMiEV tyre wear status
Mitsi say 36psi on the vehicle placard and I use 39psi, but yes, they are only small tyres with 1100kg vehicle so maybe going up more could be on the cards.
Ride quality would be more up to the suspension. It would be the thump of a pothole that would increase with a harder tyre ? Road (tyre) noise would drop, rolling resistance would drop and handling improve. Not that the i seems to have trouble with any of that.
Ride quality would be more up to the suspension. It would be the thump of a pothole that would increase with a harder tyre ? Road (tyre) noise would drop, rolling resistance would drop and handling improve. Not that the i seems to have trouble with any of that.
converted RedSuzi, the first industrial AC induction motor conversion
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
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iMiEV tyre wear status
Looks like your right front is scrubbing, AC Motor, that could be the rear wheel alignment, you would expect the left front to get more wear if roads you use have a lot of camber not the right, unless you continually get crosswinds.
Main point, I got a i-MiEV on loan a year ago, the ride and handling were terrible, until I checked the tyre pressures, the highest one was 23psi.
There are reports the tyres go down, how often do you check them?
I put mine up to 38 and after 3 months they were down to 32 all round, 6 weeks later they were under 30. (Now they are back up to 38) Does this go away when the compound ages?
Main point, I got a i-MiEV on loan a year ago, the ride and handling were terrible, until I checked the tyre pressures, the highest one was 23psi.
There are reports the tyres go down, how often do you check them?
I put mine up to 38 and after 3 months they were down to 32 all round, 6 weeks later they were under 30. (Now they are back up to 38) Does this go away when the compound ages?
Keep thinking good thoughts - cheers Kim
We will walk on our own feet, we will work with our own hands; we will speak our own minds. – Ralph Waldo Emerson
We will walk on our own feet, we will work with our own hands; we will speak our own minds. – Ralph Waldo Emerson
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iMiEV tyre wear status
I'll pick up a vernier & check mine @ 1500km
- acmotor
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iMiEV tyre wear status
I check tyres pressures about once a week seeing as I do up to 600km a week. I also do a walk around daily. (while admiring this marvel of electrical transport )
When I check pressures they are within a psi, but as I noted elsewhere on the forum, they are small tyres and checking the pressure drops the pressure by about 1 psi each time so put it back in !
I don't think the tyre wear shows any tow in/out/scrub anywhere.
The main message seems to be that the 39psi appears to be under inflation.
Reference to the iMiEV.com forum suggests that many folk are using 40 to 60psi (though 51psi is on tyre sidewall)
I did take note today that there are 10 roundabouts on my usual run. Most of which I 'enjoy' so that may have an affect on the left side wear of the front tyres.
I will swap the front tyres side to side and the rear tyres side to side to share the wear pattern.
When I check pressures they are within a psi, but as I noted elsewhere on the forum, they are small tyres and checking the pressure drops the pressure by about 1 psi each time so put it back in !
I don't think the tyre wear shows any tow in/out/scrub anywhere.
The main message seems to be that the 39psi appears to be under inflation.
Reference to the iMiEV.com forum suggests that many folk are using 40 to 60psi (though 51psi is on tyre sidewall)
I did take note today that there are 10 roundabouts on my usual run. Most of which I 'enjoy' so that may have an affect on the left side wear of the front tyres.
I will swap the front tyres side to side and the rear tyres side to side to share the wear pattern.
converted RedSuzi, the first industrial AC induction motor conversion
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
- g4qber
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iMiEV tyre wear status
As mentioned on the mitsu sig. My pressures seem to drop. I tend to use the 36 psi recommendation
http://www.aeva.asn.au/content/tyre-pressures-drop
http://www.aeva.asn.au/content/tyre-pressures-drop
Last edited by g4qber on Wed, 02 Oct 2013, 15:51, edited 1 time in total.
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iMiEV tyre wear status
Hi, AC, enjoyment of the driving experience when entering roundabouts might do it, that and hard left turns. Although I must confess the skinny fronts do not give me the confidence to chuck the i into a corner.
I usually wait until I am in a straight line before amping it, which I try to limit to once a trip. Last event was a Toyota land crusher nearly in my back seat as I tippy toed around an intersection. They really do seem to actually shrink in the rear vision mirror.
I usually wait until I am in a straight line before amping it, which I try to limit to once a trip. Last event was a Toyota land crusher nearly in my back seat as I tippy toed around an intersection. They really do seem to actually shrink in the rear vision mirror.
Keep thinking good thoughts - cheers Kim
We will walk on our own feet, we will work with our own hands; we will speak our own minds. – Ralph Waldo Emerson
We will walk on our own feet, we will work with our own hands; we will speak our own minds. – Ralph Waldo Emerson
- acmotor
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iMiEV tyre wear status
At the 15,000km service the local mitsi dealer asked me if I wanted the tyres rotated. I laughed and said he was welcome to try and suggested that a side to side swap was all that could be offered. They didn't do that either in the end ! (either offended or confused perhaps)
The i did come back with a 'next oil change due at 30,000km' sticker on the top inside RHS of windscreen. Oh well... I guess there is a lot that will have to change in service departments. A fair bit of retirement for one thing.
Those 145 fronts were chosen for a reason I guess. Maybe to look silly ? No, perhaps to limit power consumption by electric power steering or something. Anyway, they seem to do the job and the i is rather quick in the corners with its low COG and silent instant power. Most ICEs have to change down/kick down to exit with good power yet the EV drive train, in particular RWD, goes from controlled regen to full torque without any delay or effort. Its a driver's dream really.
The i did come back with a 'next oil change due at 30,000km' sticker on the top inside RHS of windscreen. Oh well... I guess there is a lot that will have to change in service departments. A fair bit of retirement for one thing.
Those 145 fronts were chosen for a reason I guess. Maybe to look silly ? No, perhaps to limit power consumption by electric power steering or something. Anyway, they seem to do the job and the i is rather quick in the corners with its low COG and silent instant power. Most ICEs have to change down/kick down to exit with good power yet the EV drive train, in particular RWD, goes from controlled regen to full torque without any delay or effort. Its a driver's dream really.
converted RedSuzi, the first industrial AC induction motor conversion
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
- g4qber
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iMiEV tyre wear status
watch out for a roadworks pothole under the city west bridge
the left tyres went completely into it
will see if there is any tyre damage tomorrow or flat tyres in the next week.
the left tyres went completely into it
will see if there is any tyre damage tomorrow or flat tyres in the next week.
Last edited by g4qber on Tue, 09 Jul 2013, 22:40, edited 1 time in total.
- acmotor
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iMiEV tyre wear status
Just looking around as the replacement tyres question will come up in the future. Could be in less than 12 months....
Presently
fronts Dunlop Enasave 2030 145/65 R15
rears Dunlop Enasave 2030 175/55 R15
My local tyre shop over the phone says these are $218.70ea. F&B front and $214.30ea. F&B rear in same Dunlop 2030s. Both avail in Oz. So they are around. Would hope for a better price.
BTW, UK price is GBP 50.20 front and GBP 72.40 rear. I guess that makes up for their expensive fuel.
There is a temptation to go to 155/60 R15 on the front (not avail in 2030's though ?)
comparison here
Bridgestone ecopia isn't avail in < 175 width on web site.
Any other options ?
Presently
fronts Dunlop Enasave 2030 145/65 R15
rears Dunlop Enasave 2030 175/55 R15
My local tyre shop over the phone says these are $218.70ea. F&B front and $214.30ea. F&B rear in same Dunlop 2030s. Both avail in Oz. So they are around. Would hope for a better price.
BTW, UK price is GBP 50.20 front and GBP 72.40 rear. I guess that makes up for their expensive fuel.
There is a temptation to go to 155/60 R15 on the front (not avail in 2030's though ?)
comparison here
Bridgestone ecopia isn't avail in < 175 width on web site.
Any other options ?
converted RedSuzi, the first industrial AC induction motor conversion
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
- g4qber
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iMiEV tyre wear status
Checked pressures today. 33 psi all round. Pumped back up to 36 psi.
- acmotor
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iMiEV tyre wear status
Just checked tyres after 2 weeks, were set at 39psi.... now 38,38,39,38.
Set them now to 40psi.
Set them now to 40psi.
converted RedSuzi, the first industrial AC induction motor conversion
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
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iMiEV tyre wear status
Kmart online can do the above Dunlops for $196.
http://www.ktas.com.au/tyres/vehicles-m ... miev/2012/
http://www.ktas.com.au/tyres/vehicles-m ... miev/2012/
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iMiEV tyre wear status
Here's a list from a Euro on the myimiev forum:
In europe we have more than 10 different tire brand wich fit.
Front tire : 145/65R15 72 T
http://www.allopneus.com/find?activite= ... n=e&page=1
Rear tire : 175/55R15 77 T
http://www.allopneus.com/find?activite= ... n=e&page=1
Here is a short list :
Toyo Proxes NE
Hankook K425
Vredestein Quatrac 3
Yokohama A.Drive AA01
Bridgestone B340
Bridgstone Turanza ER300
Pirelli Cinturato P6
Continental Ecocontact 3
Michelin Energy XT1
Dunlop Enasave 2030
Goodyear Vector 5
Theses size also fit SMART fortwo and forfour
In europe we have more than 10 different tire brand wich fit.
Front tire : 145/65R15 72 T
http://www.allopneus.com/find?activite= ... n=e&page=1
Rear tire : 175/55R15 77 T
http://www.allopneus.com/find?activite= ... n=e&page=1
Here is a short list :
Toyo Proxes NE
Hankook K425
Vredestein Quatrac 3
Yokohama A.Drive AA01
Bridgestone B340
Bridgstone Turanza ER300
Pirelli Cinturato P6
Continental Ecocontact 3
Michelin Energy XT1
Dunlop Enasave 2030
Goodyear Vector 5
Theses size also fit SMART fortwo and forfour
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iMiEV tyre wear status
http://www.toyotires.eu/tire/pattern/proxes-ne
Quote from site:
In a World first, recycled polyester fibre is used in the manufacture of the tire casing.
Quote from site:
In a World first, recycled polyester fibre is used in the manufacture of the tire casing.
- acmotor
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iMiEV tyre wear status
What about a 155/60 R15 upgrade for the fronts ?
converted RedSuzi, the first industrial AC induction motor conversion
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
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iMiEV tyre wear status
Put some "fats" on
Going wider doesn't necessarily mean bigger "foot print" area on the ground.
The lower profile would give a harder ride also.
Going wider doesn't necessarily mean bigger "foot print" area on the ground.
The lower profile would give a harder ride also.
- acmotor
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iMiEV tyre wear status
It is just a cosmetic thing perhaps.
The present fronts are smaller than some motorcycles. (well they seem that way)
The profile number (65 or 60) is a ratio to tyre width and tyre specs show the 145/65 R15 and the 155/60 R15 have the same rolling diameter, they use same rim so thus profile is the same not lower.
I'd like to know the technical reason for the size choice by Mitsi.
Was it power steering energy consumption, rolling resistance, what was laying around the lab at the time ? It appears that tyre cost was not a justification.
The tyre size must be one of the narrowest chosen for a given vehicle weight since radial tyres were invented ?
edit: not complaining, just pondering the logic.
The present fronts are smaller than some motorcycles. (well they seem that way)
The profile number (65 or 60) is a ratio to tyre width and tyre specs show the 145/65 R15 and the 155/60 R15 have the same rolling diameter, they use same rim so thus profile is the same not lower.
I'd like to know the technical reason for the size choice by Mitsi.
Was it power steering energy consumption, rolling resistance, what was laying around the lab at the time ? It appears that tyre cost was not a justification.
The tyre size must be one of the narrowest chosen for a given vehicle weight since radial tyres were invented ?
edit: not complaining, just pondering the logic.
Last edited by acmotor on Sun, 14 Jul 2013, 15:09, edited 1 time in total.
converted RedSuzi, the first industrial AC induction motor conversion
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
on to iMiEV MY12 did 114,463km
now Tesla Model 3, 4/2021 MIC pearl white
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iMiEV tyre wear status
Definitely an interesting one.
Maybe you nailed it with power steering reason.
Lower unsprung weight for handling??
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iMiEV tyre wear status
Ones on the back needing to be wider due to weight?Not looking at it needing Skinnier ones on the front for any reason. Maybe if there was less load on the back they could be same size as the front ones?
- Hippie403
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iMiEV tyre wear status
The Rinspeed i-MiEVs have these wheels and tyres:
Front: Tyre 175/50/16 Wheel 16"/5.5"/ET 34
Back : Tyre 195/45/16 Wheel 16"/6.5"/ET 33
Make Work Japan, model schwert SC1 (SW1)
Front: Tyre 175/50/16 Wheel 16"/5.5"/ET 34
Back : Tyre 195/45/16 Wheel 16"/6.5"/ET 33
Make Work Japan, model schwert SC1 (SW1)
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iMiEV tyre wear status
Rinspeed website has some good concepts/ideas.
I guess the 3 spoke mags are more aerodynamic than the multi spoke whilst still adding ventilation without going to a full disc on the MY12.
Wonder why the back wheels never got a wheel arch body cover for more aerodynamics? I guess to make it look "normal"
I guess the 3 spoke mags are more aerodynamic than the multi spoke whilst still adding ventilation without going to a full disc on the MY12.
Wonder why the back wheels never got a wheel arch body cover for more aerodynamics? I guess to make it look "normal"
- offgridQLD
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iMiEV tyre wear status
.
Last edited by offgridQLD on Wed, 07 Aug 2013, 03:14, edited 1 time in total.
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iMiEV tyre wear status
I would be interested in some data on the amount saved using low rolling resistance tyres like the ecopia etc vs normal form a real world situation, ev range should be able to be substantially improved if the spiel is real.